Question

3. Atomic mass does not have any units. Why?​

Answer 1

Answer:

$Atomic \: mass \: does'nt \: have \: any \: units \: . \: why ?$

Atomic mass is unitless because it is the ratio between the mass of an atom of a particular substance to that of 1 Carbon-12 atom and in this process, units cancel each other.

Answer 2

So, as you can tell, as long as Avogadro's hypothesis is true, we can choose an atom of any element to be our standard. So clearly, the atomic masses on the periodic table have no units attached to them because they are not actual masses, but relative atomic masses.